Nina Dobrev at the CFDA Fashion Awards on June 1, 2015. File photo by John Angelillo/UPI | License Photo

NEW YORK, Oct. 5 (UPI) --Nina Dobrev and Austin Stowell made their red carpet debut as a couple Sunday.

The 26-year-old actress and 30-year-old actor attended the New York premiere of Bridge of Spies at Alice Tully Hall in Lincoln Center. Stowell portrays real-life pilot Francis Gary Powers in the film.

Dobrev turned heads in a simple Versace dress, while Stowell sported a sleek, black suit. The actor's co-stars Tom Hanks, Amy Ryan and Alan Alda were also present, along with the movie's director, Steven Spielberg.

The actress and Stowell were first spotted at the Indy 500 in May, and collaborated on a charity event the next week. The couple were subsequently seen kissing at the Hallmark Shoebox anniversary party, and attended the Eli Mizrahi Founding Member dinner in September.

"You can tell how much they love each other just by the way they speak and their mannerisms toward one another," a source told E! News. "Austin is such a gentleman and treats Nina with such respect."

Dobrev previously dated her Vampire Diaries co-star Ian Somerhalder, who went on to marry actress Nikki Reed in April. The actor continues to play Damon on The CW series, but Dobrev departed the show after the season 6 finale in May.

Bridge of Spies is written by Matt Charman and the Coen brothers, and opens in theaters Oct. 16. Hanks stars as lawyer James B. Donovan, who was tasked with negotiating Powers' release after the pilot was shot down over the Soviet Union during the Cold War.